Summary

In this chapter, we have explored the use of decorators within TypeScript. We started by setting up our environment to make use of decorators, and then discussed the syntax used to apply decorators. We learned that we can apply decorators to classes, class properties, class methods, and even class parameters. Each of these decorators has its own set of required parameters and parameter types, based on where it is to be used. We then discussed the use of decorators and saw how we can build an audit log trail using method decorators. In the final part of this chapter, we took a look at decorator metadata, and how this metadata provides additional information about our classes at runtime. In the next chapter, we will explore the integration between TypeScript and JavaScript, and how these two languages can co-exist within the same project.